2825-00-992-0620 SEAT,NUT Index 4820-00-992-0622 SEAT,VALVE

National Stock Number:
4820-00-992-0621

Federal Supply Class:
4820

National Item Identification Number:
009920621

Description:
SEAT,VALVE

Detail:
A replaceable item designed to provide a circular stationary seating surface for a mating, moveable item such as a valve disk or the like. The body may have a flange of various shapes. For diesel and gasoline reciprocating engines, see INSERT, ENGINE VALVE SEAT.


Manufacturer Information:
668J901PC9579500WESTINGHOUSE ELECTRIC CORP
935B111-279500WESTINGHOUSE ELECTRIC CORP
935B111-288657WESTINGHOUSE ELECTRIC CORP POWER GENERATION-TURBINE DIV
935B111-290099NORTHROP GRUMMAN SYSTEMS CORPORATION
935B111PC279500WESTINGHOUSE ELECTRIC CORP
935B111PC290099NORTHROP GRUMMAN SYSTEMS CORPORATION


Techincal Specification:
FLANGE DIAMETER4.042 INCHES MINIMUM AND 4.052 INCHES MAXIMUM
FSC APPLICATION DATATURBINE,STEAM
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-17131,TYPE MIL-RCOCR-A MIL SPEC SINGLE MATERIAL RESPONSE SEAT
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763,CL 410,COND T FED SPEC SINGLE MATERIAL RESPONSE BODY
MATERIALCOBALT ALLOY SEAT
MATERIALSTEEL BODY
SEAT RADIUS0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM
SEATING SURFACE SHAPERADIAL


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